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- W4313444421 abstract "Generating entangled states is self-evidently important to a wide range of applications in quantum communication and quantum information processing. Here we propose an efficient and convenient two-step protocol for generating Bell states and NOON states of two microwave resonators, merely from their coherent states. In particular, we derive an effective Hamiltonian for resonators when coupling to a superconducting Lambda-type qutrit in the dispersive regime. The shift of the qutrit transition frequency is found to be dependent on the excitation number of resonators. The Hamiltonian then enables one to use carefully tailored microwave drive signals to individually control the amplitudes of two qutrit transitions associated with particular Fock states of the relevant resonators. Thereby an arbitrary desired entangled state can be generated by a typical evolution-and-measurement procedure from product coherent states. We also analysis the robustness of our protocol against the systematic error from the microwave driving intensity, the quantum dissipation of all components, and the crosstalk of two resonators. In addition, we demonstrate that our protocol can be extended to a similar scenario with a Xi-type qutrit." @default.
- W4313444421 created "2023-01-06" @default.
- W4313444421 creator A5002842847 @default.
- W4313444421 creator A5007990663 @default.
- W4313444421 date "2022-12-29" @default.
- W4313444421 modified "2023-09-26" @default.
- W4313444421 title "Generating entangled states from coherent states in circuit-QED" @default.
- W4313444421 doi "https://doi.org/10.48550/arxiv.2212.14295" @default.
- W4313444421 hasPublicationYear "2022" @default.
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